Science

Sunday, 24 May 2026
13 facts about tears
13 facts about tears
Multipurpose liquid
Associated with emotions, tears are a product of lacrimal glands, found in the eyes of most terrestrial vertebrates. Although their primary function i ...

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Earth
The Earth's core is a ball with a diameter of 6940 km - so it is larger than Mars.
It is made of an alloy of nickel and iron with small admixtures of other elements. It reaches temperatures from 5500 to 6500 degrees Celsius and the pressure there is 13.5 million atmospheres.
Snow
Snow accumulates in areas cold enough to remain there seasonally or all the time.
The main areas prone to snow are the Artic, Antarctica, the northern hemisphere, and alpine regions.
NASA
The second Crew Dragon mission, SpaceX Crew-2, set the record for the longest spaceflight by the U.S. after spending 200 days in orbit.
NASA
NASA logo is nicknamed the “meatball.”
It was designed by James Modarelli in 1959.
Silver
It is approximately 17 times more abundant in the Earth's crust than gold.
Silver is mined in Mexico, Peru, China, Australia, Chile, Poland, Russia, Bolivia, USA, Argentina, Canada, Kazakhstan, India, Turkey, Sweden, Guatemala, Morocco, Indonesia, Iran, and Papua New Guinea.
Enceladus
It is the sixth-largest moon of Saturn.
Aurora
In the language of the Sámi people (the native inhabitants of Lapland), the name of the aurora "guovssahasah" means "the sun shining in the sky in the morning or evening".
The Sámi people claimed that creating a song about the aurora borealis is dangerous and threatens to draw polar light on themselves, which bode inevitable death.
Brain
The brain requires constant supplementation with oxygen.
Cut off from oxygen, brain cells start dying after about 5 minutes.
NASA
The first NASA crewed Space Program was Project Mercury.
Although it is not well-remembered, it was the foundation for all space missions.
Moon
The Moon's magnetic field is over 100 times weaker than the Earth's and ranges from 1 to 100 nanotesla.
It is not dipolar, so it is assumed that its source is not the nucleus but the crust.